Lubrication fitting



' Dec. 17, 1929. H. c. GIBSON 1.740.297

LUBRIGATION FITTING Filed May 27. 1927 unl Patented Dec. 17, 1929 HUGOC. GIBSON, 0F IHILAIJELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF rl`0 E.HAYWARD FAIRBANKS, 0F MERCHAN'IVILLE, NEW JERSEY LUBRICATION FITTINGApplication filed May 27,

My novel invention relates to a novel lubri in the path of the passagefor lubricant' through the fitting, said ball or check valves beingpressed onto their seat by springs which are held between the ball andsome ledge or abutment within the fitting. ,Grit or foreign matterfrequently lodges between the ball and its seat and deformation of the fseat occurs through the fitting being struck by tools or the like, withthe result that the ball fails to make a grease tight seal and extrusionof the grease occurs. Consequently the machinery becomes unclean.

The object of my invention is to provide a lubrication fitting whichshall be free' from the above disadvantages, shall be tightly sealedagainst extrusion, and shall furnish a free passage for lubricantapplied to the fitting.

For the purpose of illustrating my invention I have shown in theaccompanying drawings two forms thereof which are at present preferredby me, since the same have been found in practice to give satisfactoryand reliable results, although it is to be understood that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized and that my invention is not limited to theprecise arrangement and organization of the instrumentalities as hereinshown and described.

In the accompanying drawings;

Fig. l, represents a perspective sectional View of al fitting embodyingmy invention.

Fig. 2, represents a perspective sectional j View of a modification.

Fig. 3, represents a perspective of the valve support seen in Fig. 2.

Fig. 4, represents, on a reduced scale, a

1927. Serial No. 194,635.

perspective view of the fitting seen in Fig. 2.

Fig. 5, represents a sectional perspective View of a modification.

In the various figures, similar numerals ol' reference indicatecorresponding parts.

Referring now to Fig. l, l designates the body of my novel fitting,which is perferably of standard pipe size and furnished at one end witha standard male pipe thread whereby the litt-ing may be inserted in amachine bearing housing. At the other end of the fitting is an inwardlyformed seat 2 arranged to accommodate the cup shaped, flexible valve 3which is attached at its center to the center of the integral head 4L ofthe body by the rivet or other fastening device 5. This head is piercedvwithholes 6, permitting the passage of lubricant, and its surface 7 ispreferably dished generally as shown. A bar S passing transverselythrough the fitting projects beyond the body to form lugs for theattachment of a hose coupling or lubricating gun in the well knownmanner of a bayonet joint.

In Fig. 2, is shown a body l having a seat 2 for the cup shaped valve 3which is attached at its center by a rivet 5 to a supporting arch 9which is carried upon inwardly extending projections l0 upon theinternal surface of the fitting body. The concentric hole ll is providedfor the passage of lubricant to and past the valve 3.

In Fig. 3, is shown the relation of the valve support 9 to the bar 8.

In Fig. 5, is shown a method of holding the cup shaped valve 3 inposition juxtaposed to its seat 2, whereby the valve 3 is attached bymeans of the rivet 5 to a perforated disc l2, which is spun over the endof the body l, so that its edge 13 engages the groove la formed in thebody l.

The operation is as follows: Upon a grease gun or` pressure lubricatoidevice being attached to the fitting by means of the lugs of the bar 8,and lubricant under pressure being seatV by a central fasteningemeanscommento'- the valve andto'the fit-tingbody. Y

It will now be apparent that I haveu devised a novel and usefulconstruction which em*- bodies the features of advantage enumerated asdesirable in the statement ofthe invention and the' above-description,and while I have in the present. instance; shownv andrdesoribed. thepreferred embodiments thereof which have been found in fpracticer togive satisfactory and-reliable-results, it istobe understood thatthe-same are susceptible of modification in various particulars withoutdeparting from thespiritorscopeof the invention or-sacriy ficing any ofits advantages.

Having-thus described my invention, what.

I' claim as new,A and desire to secure by Let ters Patent, is:

l. In alubrication fitting a tubular body,` a flexible disk valveseating upwardly and` controlling an end thereof, said disk valverbeingshaped to have a snug vffit with both the top andfsidewalls of saidtubular body, and rigid- 1y central supportingandzsecuring means forsaid valve carriedby said body.

2. In ai lubrication fitting, a body portion,v a valve.` seat therein, aflexibleinverted. cup. shaped valve, and a. rigid centrally disposed,

support forsaid valve common tothe latter and said body.

3. In a lubrication fitting, ar body portion,

an. internall valve seat below thetop vof said body and integraltherewith, av flexible cupA shaped valve cooperating 'withsaid valveseat,

and a fixedr support for said valve.

. et. In a lubrication fitting, a body, ar flexiblet inverted'cupeshaped upwardly4 seating valve` therein, a rigid central support forsaidvalve carried by said body, and lugs projecting laterally from saidbody belowsaid valve.

5. Inv a lubricationiitt'ing, a body portion.l having-at one end meansfor attachment to,

machinery, and at the other end a ported dished face, an internal valveset below the top of said body, a flexible cup shaped valve;

i cooperating-with saidvalveseat, and as rigid support for said valve.

6. In a lubrication fitting, a body portion having at one endA means forattachment to-v machinery and at the other end a ported dished face, an.internal valveseat below the` top of said body, a flexible cup shapedvalve cooperating with said valve seat, a rigid support for said valve,and lugs projecting from the outer surface of said body.

7. In a lubrication fitting, a body, a flexible inverted lcupeshapedupwardly seating valve therein, a rigid central support for said valvecarried by said body, and a bar extended transversely through said bodybelow said valve and projected laterally therefrom to provide attachmentlugs.

HUGO C. GIBSON.

